KST to EST converter
When it's 9:00 am in Seoul, it's 8:00 pm the day before in New York (7:00 pm the day before from November to March). Your working days don't overlap at all, so someone starts early or stays late for every call.
Convert Korea Standard Time (KST) to Eastern Standard Time (EST) for any date and time.
Eastern Time is 13 hours behind Korea Standard Time from March to November, and 14 hours behind the rest of the year.
Right now KST is UTC+9 and Eastern Time is on EDT (UTC−4). Eastern Time switches back to standard time on 1 November 2026.
US clocks go back on 1 November 2026. From then, EST is 14 hours behind KST.
9:00 am to 5:00 pm KST is 8:00 pm EDT the day before to 4:00 am EDT.
- 8:00 am KST is 7:00 pm EDT the day before
- 9:00 am KST is 8:00 pm EDT the day before
- 10:00 am KST is 9:00 pm EDT the day before
- 12:00 pm KST is 11:00 pm EDT the day before
- 3:00 pm KST is 2:00 am EDT
- 5:00 pm KST is 4:00 am EDT
Hours in Korea Standard Time, Fri, Oct 23
Korea Standard Time
South Korea
Fri, Oct 23
KST · UTC+9ReferenceOutside working hoursEastern Time
US & Canada
Fri, Oct 23
EDT · UTC−4−13h from Korea Standard TimeOutside working hours
No shared working hours on Fri, Oct 23. Pick the slot closest to everyone's working day, or let each person pick from your availability.
Share a booking link insteadWorking hours: 9:00 AM–5:00 PM, Monday to FridayEveryone at work
KST to EST conversion table
Every hour of the day in KST, converted to EDT. Shaded cells are working hours (9:00 am to 5:00 pm); green rows are working hours in both zones.
| KST | EDTUntil 1 November 2026; From 14 March 2027 | EST1 November 2026 to 14 March 2027 |
|---|---|---|
| 12:00 am KST | 11:00 am EDT(day before) | 10:00 am EST(day before) |
| 1:00 am KST | 12:00 pm EDT(day before) | 11:00 am EST(day before) |
| 2:00 am KST | 1:00 pm EDT(day before) | 12:00 pm EST(day before) |
| 3:00 am KST | 2:00 pm EDT(day before) | 1:00 pm EST(day before) |
| 4:00 am KST | 3:00 pm EDT(day before) | 2:00 pm EST(day before) |
| 5:00 am KST | 4:00 pm EDT(day before) | 3:00 pm EST(day before) |
| 6:00 am KST | 5:00 pm EDT(day before) | 4:00 pm EST(day before) |
| 7:00 am KST | 6:00 pm EDT(day before) | 5:00 pm EST(day before) |
| 8:00 am KST | 7:00 pm EDT(day before) | 6:00 pm EST(day before) |
| 9:00 am KST | 8:00 pm EDT(day before) | 7:00 pm EST(day before) |
| 10:00 am KST | 9:00 pm EDT(day before) | 8:00 pm EST(day before) |
| 11:00 am KST | 10:00 pm EDT(day before) | 9:00 pm EST(day before) |
| 12:00 pm KST | 11:00 pm EDT(day before) | 10:00 pm EST(day before) |
| 1:00 pm KST | 12:00 am EDT | 11:00 pm EST(day before) |
| 2:00 pm KST | 1:00 am EDT | 12:00 am EST |
| 3:00 pm KST | 2:00 am EDT | 1:00 am EST |
| 4:00 pm KST | 3:00 am EDT | 2:00 am EST |
| 5:00 pm KST | 4:00 am EDT | 3:00 am EST |
| 6:00 pm KST | 5:00 am EDT | 4:00 am EST |
| 7:00 pm KST | 6:00 am EDT | 5:00 am EST |
| 8:00 pm KST | 7:00 am EDT | 6:00 am EST |
| 9:00 pm KST | 8:00 am EDT | 7:00 am EST |
| 10:00 pm KST | 9:00 am EDT | 8:00 am EST |
| 11:00 pm KST | 10:00 am EDT | 9:00 am EST |
Best times to meet
A 9-to-5 working day in KST and one in EDT don't overlap. The closest fit is 9:00 am KST (8:00 pm EDT the day before), when one of you starts early or stays late.
About these time zones
KST: Korea Standard Time
Korea Standard Time is UTC+9.
South Korea, with no daylight saving time. North Korea uses the same offset.
EST: Eastern Standard Time
Eastern Standard Time is UTC−5.
New York, Florida, Georgia, the Carolinas, Ohio, Michigan and the rest of the East Coast, plus Ontario and Quebec in Canada. Panama, Jamaica and Cancún stay on EST all year. ET is the short form for the whole zone.
Most places on Eastern Time are on EDT (UTC−4) right now, not EST. People still say "EST" all year, so the times on this page follow the clocks and show EDT until 1 November 2026.
How the difference changes
Right now EDT is 13 hours behind KST. From 1 November 2026, when US clocks go back, the difference becomes 14 hours. From 14 March 2027, when US clocks go forward, the difference becomes 13 hours.